A textile wholesaler from Burrabazar reached us last July with four days left before the return deadline. His GST filings showed one turnover, his current accounts told a second story, and his part time accountant had stopped answering calls. We reconciled the figures, filed on time, and he paid nothing in late fees. That is what income tax return filing in Kolkata usually turns on: not the portal, which is national, but the discipline of matching the return to what this city's trade actually looks like on paper. This page covers that local layer. For form selection, deduction lists and regime rules, read the full income tax return filing process nationwide.
Who in Kolkata actually has to file this year?
More people than assume so. The clearest cases come first: every company and LLP on the ROC West Bengal register files a return each year, profit or loss. Beyond that, think about who already holds a number against your PAN:
- Salaried employees in Salt Lake Sector V and elsewhere whose Form 16 shows tax deducted at source.
- Traders in Burrabazar and Howrah with GST registrations, since reported turnover reaches the AIS.
- Exporters whose foreign remittance credits appear in bank data year after year.
- Landlords in Gariahat or New Town whose tenants deduct or report tax on rent.
- Anyone whose bank interest, share sales or property transactions show up in the AIS.
The working test we give Kolkata clients is blunt. If any authority already reports a figure against your PAN, file, even when your income sits below the ₹3 lakh basic exemption. Silence is what invites notices, not small incomes.
How does the return come together for a Kolkata business?
Start from the records, not the form. For a trading concern we pull the year's GST returns, bank statements and stock position, then build the income computation upward from them. For salaried filers the spine is Form 16, read alongside the AIS to catch interest and dividend entries the employer never sees. Once the computation is ready, we run it under both regimes and show the difference in rupees rather than theory. You approve, we file, and e-verification closes the loop. Nothing in this sequence needs a physical visit; the portal accepts everything online.
Which offices already know your numbers?
There is no income tax counter in Kolkata you must queue at for a routine filing. The local layer is the data trail. A Kolkata trader's GST file sits either with a West Bengal State GST officer under the Directorate of Commercial Taxes or with a central officer in one of the central GST commissionerates in Kolkata. Whatever turnover you declare there flows into the AIS the income tax department reads. When GSTR filings say ₹1.2 crore and the return says ₹80 lakh, a query is only a matter of time. We reconcile the two before submission, which is the biggest single reason our trading clients do not hear from the department afterwards.
What will filing cost you in Kolkata?
CA assisted filing starts at ₹999 for salaried returns, covering computation, regime comparison and submission. Business and company returns are quoted once we see the books, because the hours vary: a presumptive scheme trader is quick, a multi branch wholesaler is not. Two costs sit on the other side of the ledger. File late and a fee of ₹1,000 to ₹5,000 applies depending on income, with interest running on unpaid tax. Miss the belated window entirely and the losses you could have carried forward are gone. Against those figures, ₹999 is not a serious debate.
Which papers should a Kolkata filer keep ready?
The list depends on who you are, so we send a checklist matched to your profile. The usual spread looks like this:
- Salaried: Form 16, payslips showing the profession tax deduction, and bank interest certificates.
- Traders: GST return copies, purchase and sales registers, and statements for every current account the business touches.
- Exporters: export invoices and the bank paperwork showing realization of foreign proceeds.
- Property owners: rent details, municipal tax receipts and any home loan interest certificate.
- Everyone: a fresh AIS download, because it decides what the department expects to see.
Half of the filing errors we fix in Kolkata trace to a forgotten current account, opened years ago for a single consignment and never closed. Tell us about every account. The AIS remembers even when you do not.
Which deadlines belong on your calendar?
Three dates shape the filing year:
- July 31, 2026 for salaried filers and other cases that need no audit.
- October 31, 2026 where accounts need audit, which covers companies and many larger trading firms.
- December 31, 2026, the final day for belated and revised returns.
Here is what missing each one costs:
| Situation | Due date | If you miss it |
|---|---|---|
| No audit case, income up to ₹5 lakh | July 31, 2026 | Late fee of ₹1,000 |
| No audit case, income above ₹5 lakh | July 31, 2026 | Late fee of ₹5,000 |
| Audit case, firm or company | October 31, 2026 | Late fee plus interest on unpaid tax |
| Belated window closes | December 31, 2026 | Carried forward losses lapse for the year |
Where does West Bengal profession tax meet your return?
This is the part national guides skip, because several states levy nothing comparable. West Bengal charges profession tax under the West Bengal State Tax on Professions, Trades, Callings and Employments Act, 1979. For salaried staff the employer deducts it every month, and under the old regime that deduction reduces taxable salary, so the payslip entry is worth money. Profession tax here is capped at ₹2,500 a year, and monthly salary deductions top out at ₹200. Self employed traders and professionals need their own enrolment certificate and pay directly on the West Bengal profession tax portal by the annual due date. That payment then sits in the books as a business expense. During return preparation we check the enrolment of every proprietor and partner we file for. A missing enrolment tends to surface at the worst time, usually during a bank loan review or a government tender.
Why do Kolkata filers choose LegalX India?
Because we file this city's returns with this city's context in mind. Our team sits at Barasat in the northern Kolkata metropolitan area, and the whole engagement runs online with CA and CS support. The work itself stays careful and unglamorous: reconcile the AIS, match the GST trail, check the profession tax entry, compare regimes, file, verify. A leather goods exporter at Bantala once told us the refund we traced covered his factory insurance for the year. That is the standard we hold every July. Send your Form 16 or trial balance today and the return can be filed within 3 to 5 days.